// program 10.4
// day_mon2.c -- 让编译器计算元素个数
#include <stdio.h>

int main(void)
{	int days[] = {31, 28, 31, 30, 31, 30, 31, 31, 30,31};
	int index;

	for (index = 0; index < sizeof days / sizeof days[0]; index++)
	{
		printf("Month %2d has %d days.\n", index + 1, days[index]);
	}

	return 0;
}
